翻訳と辞書 Words near each other ・ Lusitano Stadium ・ Lusitanops ・ Lusitanops blanchardi ・ Lusitanops bullioides ・ Lusitanops cingulatus ・ Lusitanops dictyota ・ Lusitanops expansus ・ Lusitanops hyaloides ・ Lusitanops lusitanicus ・ Lusitanops macrapex ・ Lusitanops sigmoideus ・ Lusitanos XV ・ Lusitanosaurus ・ Lusitromina ・ Lusitromina abyssorum ・ Lusitropy ・ Lusitânia F.C. ・ Lusius Quietus ・ Lusići ・ Lusk ・ Lusk (band) ・ Lusk Committee ・ Lusk Covered Bridge ・ Lusk Creek ・ Lusk Creek Canyon ・ Lusk Creek Wilderness ・ Lusk Home and Mill Site ・ Lusk Reservoir ・ Lusk services ・ Lusk Water Tower Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Lusitropy ： ウィキペディア英語版 Lusitropy Lusitropy is myocardial relaxation. The increase in cytosolic calcium of cardiomyocytes via increased uptake leads to increased myocardial contractility (positive inotropic effect), but the myocardial relaxation, or lusitropy, decreases. This should not be confused, however, with catecholamine-induced calcium uptake into the sarcoplasmic reticulum, which increases lusitropy. ==Positive== Increased catecholamine levels promote positive lusitropy, enabling the heart to relax more rapidly. This effect is mediated by the phosphorylation of phospholamban and troponin I via a cAMP-dependent pathway. Catecholamine-induced calcium influx into the sarcoplasmic reticulum increases both inotropy and lusitropy. In other words, a quicker reduction in cytosolic calcium levels (because the calcium enters the sarcoplasmic reticulum) causes an increased rate of relaxation (+ lusitropy), however that also enables a greater degree of calcium efflux, back into the cytosol, when the next action potential arrives, thereby increasing inotropy as well. Do not confuse this calcium mechanism with calcium uptake from the extracellular fluid. Increased calcium uptake from the extracellular fluid into the cytoplasm decreases lusitropy in the absence of catecholamine stimulation, but increased calcium uptake into the sarcoplasmic reticulum, via catecholamines, increases lusitropy and inotropy. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lusitropy」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.